5m^2-5m-5=2

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Solution for 5m^2-5m-5=2 equation:


Simplifying
5m2 + -5m + -5 = 2

Reorder the terms:
-5 + -5m + 5m2 = 2

Solving
-5 + -5m + 5m2 = 2

Solving for variable 'm'.

Reorder the terms:
-5 + -2 + -5m + 5m2 = 2 + -2

Combine like terms: -5 + -2 = -7
-7 + -5m + 5m2 = 2 + -2

Combine like terms: 2 + -2 = 0
-7 + -5m + 5m2 = 0

Begin completing the square.  Divide all terms by
5 the coefficient of the squared term: 

Divide each side by '5'.
-1.4 + -1m + m2 = 0

Move the constant term to the right:

Add '1.4' to each side of the equation.
-1.4 + -1m + 1.4 + m2 = 0 + 1.4

Reorder the terms:
-1.4 + 1.4 + -1m + m2 = 0 + 1.4

Combine like terms: -1.4 + 1.4 = 0.0
0.0 + -1m + m2 = 0 + 1.4
-1m + m2 = 0 + 1.4

Combine like terms: 0 + 1.4 = 1.4
-1m + m2 = 1.4

The m term is -1m.  Take half its coefficient (-0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
-1m + 0.25 + m2 = 1.4 + 0.25

Reorder the terms:
0.25 + -1m + m2 = 1.4 + 0.25

Combine like terms: 1.4 + 0.25 = 1.65
0.25 + -1m + m2 = 1.65

Factor a perfect square on the left side:
(m + -0.5)(m + -0.5) = 1.65

Calculate the square root of the right side: 1.284523258

Break this problem into two subproblems by setting 
(m + -0.5) equal to 1.284523258 and -1.284523258.

Subproblem 1

m + -0.5 = 1.284523258 Simplifying m + -0.5 = 1.284523258 Reorder the terms: -0.5 + m = 1.284523258 Solving -0.5 + m = 1.284523258 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '0.5' to each side of the equation. -0.5 + 0.5 + m = 1.284523258 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + m = 1.284523258 + 0.5 m = 1.284523258 + 0.5 Combine like terms: 1.284523258 + 0.5 = 1.784523258 m = 1.784523258 Simplifying m = 1.784523258

Subproblem 2

m + -0.5 = -1.284523258 Simplifying m + -0.5 = -1.284523258 Reorder the terms: -0.5 + m = -1.284523258 Solving -0.5 + m = -1.284523258 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '0.5' to each side of the equation. -0.5 + 0.5 + m = -1.284523258 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + m = -1.284523258 + 0.5 m = -1.284523258 + 0.5 Combine like terms: -1.284523258 + 0.5 = -0.784523258 m = -0.784523258 Simplifying m = -0.784523258

Solution

The solution to the problem is based on the solutions from the subproblems. m = {1.784523258, -0.784523258}

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